Spectral properties of highly selective chemosensor for Hg2+

被引：6
|
作者：
Lee, Eun-Mi [1 ]
Gwon, Seon-Yeong [2 ]
Kim, Sung-Hoon [2 ]
机构：
[1] FITI Testing & Res Inst, Seoul 89264, South Korea
[2] Kyungpook Natl Univ, Dept Text Syst Engn, Taegu 702701, South Korea
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2014年 / 120卷
基金：
新加坡国家研究基金会;
关键词：
Chemosensor; Hg2+ cation sensing; Fluoride ion; Colorimetric; Association constant; CHARGE-TRANSFER; CHEMISTRY; MERCURY; DYES; FLUORESCENCE; RECOGNITION; SENSORS; METALS; IONS;
D O I：
10.1016/j.saa.2013.10.061
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A (E)-2-(2-(2-(1H-indo1-3-yl)vinyl)-4H-chromen-4-ylidene)malononitrile (dye 1) was synthesized and its cation sensing properties in DMSO were investigated by UV-vis spectroscopy. Upon the addition of Hg2+, the solution of dye 1 showed color change and the absorption band shows a formation of a 1:1 dye 1-Hg2+ coordination complex. The dye 1 exhibited high selectivity for Hg2+ as compared with other cations. Interestingly, the dye 1-F- complex also could be recovered by adding Hg2+. We have investigated the ability of complex formation based on the association constant, K-ass; the binding ability for the complex formation of dye 1-F- and Hg2+ is greater than that of the dye 1 with F-. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：646 / 649
页数：4
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